1: (0 7 11)

(0)(1 20 9)(2 14 13)(3 7 16 11 5)(4 19 17)(6 10 8)(12 18 15)

2: (1 20 9)

(0)(1)(2 14 13)(3 7 16 11 5)(4 19 17)(6 10 8)(9)(12 18 15)(20)

3: (6 10 8)

(0)(1)(2 14 13)(3 7 16 11 5)(4 19 17)(6)(8)(9)(10)(12 18 15)(20)

4: (3 7 16)

(0)(1)(2 14 13)(3 11 5)(4 19 17)(6)(7)(8)(9)(10)(12 18 15)(16)(20)